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Galvanised steel mechanical pipe plug, 4 inch nominal size

Cherne

Cherne 271543 mechanical pipe plug 4 in

SKU CH-08WJ-TBXC5 MPN 271543

A mechanical pipe plug that seals 4-inch lines with a 3.78 to 4.5 inch range and galvanized steel construction

  • TypeDrain Components
  • MaterialHAWA
  • Seals 4-inch pipes with a 3.78 to 4.5 inch range
  • Galvanized steel construction resists corrosion in plumbing systems
  • Mechanical design enables quick installation without adhesives
  • Rated for 2 PSI air pressure and 5 feet head pressure
  • Cherne Industries model 271543 built for drain and trap applications

4-inch mechanical pipe plug

The Cherne 271543 is a galvanised-steel mechanical plug built to seal the end of a 4-inch pipe during pressure testing or temporary shut-off. It suits plumbing contractors and maintenance crews who need a reusable, hand-tightened barrier without welding or adhesives.

Galvanised steel body and expandable range

The plug fits pipes with an inside diameter between 3.78 in and 4.5 in, expanding by a central bolt to grip the wall. Galvanised construction resists corrosion on job sites, and the mechanical action lets installers insert, tighten and remove the plug repeatedly with basic hand tools.

Replaces inflatable or single-use test caps

This mechanical plug removes the need for disposable rubber caps or inflatable bladders that can puncture or lose pressure. The jump is worth it when crews run repeated air tests up to 2 psi or water columns up to 5 ft of head and want a durable, instant-seal solution they can carry from job to job.

Highlights

  • Seals 4-inch pipes with a 3.78 to 4.5 inch range
  • Galvanized steel construction resists corrosion in plumbing systems
  • Mechanical design enables quick installation without adhesives
  • Rated for 2 PSI air pressure and 5 feet head pressure
  • Cherne Industries model 271543 built for drain and trap applications

Specifications

TypeDrain Components
MaterialHAWA
BrandCherne Industries
Model271543

Questions about this item

What nominal pipe size does the Cherne 271543 mechanical plug fit, and what diameter range does it cover?

The Cherne 271543 fits a nominal 4 in pipe and seals diameters from 3.78 in to 4.5 in.

What clearance and pipe condition are required for the 271543 to seat properly?

The plug needs a clean, round pipe interior between 3.78 in and 4.5 in; debris or ovality will prevent a seal.

How is the 271543 mechanical plug installed, and what step is often missed?

Insert the plug, then tighten the central bolt to expand the rubber sleeve; the step often missed is torquing the bolt enough to lock the sleeve against the pipe wall.

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